NAME

lts.conf - Main configuration file for LTSP

SYNOPSIS

Any line beginning with a '#' is considered a comment. Options are of
the format:
VARIABLE=value

DESCRIPTION

This file gets parsed when LTSP client starts up. The section defined
by [default] gets applied to all clients, unless there is a
specification for a particular client that overrides it. The per-client
specs are prefixed by [<mac address>]
You may also name an arbitrary section with a name, with settings
underneath that section. You may then inherit that section with the
LIKE variable. The Example section has an illustration of this.
boolean values are specified by 'Y,y,True,true' for true and
'N,n,False,false' for false

LTS.CONF-GENERALPARAMETERS

CONFIGURE_FSTAB
boolean, default True/etc/fstab is generated by boot scripts
CRONTAB_01..CRONTAB_10
string, default unset
A crontab line to add for a thin client.
DNS_SERVER
string, default unset
A valid IP for domain name server Used to build the client's
resolv.conf file. Not needed by default.
SEARCH_DOMAIN
string, default unset
sets a valid search domain in the clients's resolv.conf file. Used
to build the resolv.conf file. Not needed by default.
Needed if DNS_SERVER is set
LOCAL_APPS
boolean default False
Whether to run apps locally on the client or not
LOCAL_APPS_EXTRAMOUNTS
string, default unset
This parameter enables extra mount points to be mounted on the thin
client with sshfs. This require a commas separated list of
directory.
LOCALDEV
boolean, default True
This parameter enables local devices support, like CD's and USB
sticks. Users plugging them in should see them on the desktop,
after they've been allowed to access the FUSE subsystem on the
server. Check your distibutions docs to see how this is done on
your distribution.
LOCALDEV_DENY_CD
boolean, default False
This parameter disables local device support for CD and DVD-rom
devices.
LOCALDEV_DENY_FLOPPY
boolean, default False
This parameter disables local device support for floppy devices.
LOCALDEV_DENY_INTERNAL_DISKS
boolean, default True
This parameter disables local device support for internal ATA and
SCSI hard disk devices.
LOCALDEV_DENY_USB
boolean, default False
This parameter disables local device support for USB devices.
LOCALDEV_DENY
string, default unset
This parameter disables local device support for devices matching
certain patterns. Values are specified as a comma-separated list of
sysfs attributes, which can be obtained by using udevadm info (or
udevinfo). for example:
udevadm info -q env -n /dev/hda
ID_TYPE=disk
ID_BUS=ata
should return a list of the attributes relevent to /dev/hda. to
exclude this disk and disks like it using LOCALDEV_DENY:
LOCALDEV_DENY="ID_BUS:ata+ID_TYPE:disk" would match devices that
were on the ata bus that were disks.
NBD_SWAP
boolean, default False
Set this to True if you want to turn on NBD swap.
If you enable this, you'll need to add the line:
nbdswapd: ALL: keepalive
to your /etc/hosts.allow file.
NBD_SWAP_PORT
integer, default 9572
The port on which NBD swapping will occur. This is set to 9572 by
default.
NBD_SWAP_SERVER
IP address, default SERVER
The NBD swap server can exist on any server on the network that is
capable of handling it. You can specify the IP address of that
server. The default is whatever the value of SERVER set to.
SERVER
IP address, default unset
This is the server that is used for the XDM_SERVER, TELNET_HOST,
XFS_SERVER and SYSLOG_HOST, if any of those are not specified
explicitly. If you have one machine that is acting as the server
for everything, then you can just specify the address here and omit
the other server parameters. If this value is not set, it will be
auto detected as the machine that the thin client booted from.
SYSLOG_HOST
IP address, default unset
If you want to send logging messages to a machine other than the
default server, then you can specify the machine here. If this
parameter is NOT specified, then it will use the SERVER parameter
described above.
USE_LOCAL_SWAP
boolean, default False
If you have a hard drive installed in the thin client, with a valid
swap partition on it, this parameter will allow the thin client to
swap to the local hard drive.
TIMEZONE
string, default unset
The timezone code for the thin client to use.
TIMESERVER
IP address, default unset
The address of an NTP time server that the thin client can set it's
time from. If unset, the thin client just uses the BIOS time.
SHUTDOWN_TIME
string, format hh:mm:ss in 24 hour format, default unset
Time at which thin client will automatically shut down.

LTS.CONF-SCRIPTSANDMODULES

MODULE_01...MODULE_10
string, default unset
Up to 10 kernel modules can be loaded by using these configuration
entries. The entire command line that you would use when running
insmod can be specified here. For example:
MODULE_01 = uart401.o
MODULE_02 = "sb.o io=0x220 irq=5 dma=1"
MODULE_03 = opl3.o
If the value of this parameter is an absolute path name, then
insmod will be used to load the module. Otherwise, modprobe will be
used.
In normal circumstances, you shouldn't need to specify anything
here, as most hardware will be auto-detected.
RCFILE_01...RCFILE_10
A custom rc file, default unset
Additional RC scripts can be executed by the ltsp-client-setup
script. Just put the script in the /opt/ltsp/i386/etc/init.d
directory, and specify the name of the script in one of these
entries. Note that you must specify a full path, relative to the
chroot. So, for example, if you have an RC file called
/opt/ltsp/i386/etc/init.d/myrcfile, you'd specify:
RCFILE_01=/etc/init.d/myrcfile
In your lts.conf file.

LTS.CONF-PRINTERPARAMETERS

PRINTER_0_DEVICE
string, default unset
The device name of the printer. Valid device names such as
/dev/lp0, or /dev/usblp0 are allowed.
PRINTER_0_PORT
integer, default 9100
The TCP/IP Port number to use for the print server.
PRINTER_0_TYPE
string, default unset
Can either be set to P (for parallel), U (for USB) or S (for
serial). Autodetected in most cases (except for serial).
PRINTER_0_WRITE_ONLY
boolean, default False
Some parallel printers may need this set in order for the thin
client to communicate to them properly. If you have problems with a
parallel printer only printing part of the print job, try setting
this to True.
PRINTER_0_SPEED
integer, default 9600
Should be set to the baud rate of the printer (serial printers
only).
PRINTER_0_FLOWCTRL
string, default unset
Should be set to the flow control desired for the printer (serial
printers only).
PRINTER_0_PARITY
boolean, default False
Specifies whether parity should be enabled for the printer (serial
printers only).
PRINTER_0_DATABITS
integer, default 8
Specifies how many data bits for the printer (serial printers
only).
PRINTER_0_OPTIONS
string, default unset
Specifies specific options for the printer (serial printers only).
LDM_PRINTER_LIST
string, default unset
Comma separated list of printers that will be displayed for that
thin client (requires patched cups, included in Debian and Ubuntu).
LDM_PRINTER_DEFAULT
string, default unset
Default printer for the thin client.
SCANNER
boolean, default unset
This parameter enables scanners for the thin client.

SOUNDANDVOLUMECONTROLPARAMETERS

These parameters allow you to control the volume on the thin client.
SOUND
boolean, default True
This parameter enables sound for the thin client.
SOUND_DAEMON
string, default pulse
This parameter sets which sound daemon to use on the thin client.
Values are esd, nasd, and pulse (default).
VOLUME
integer, default 90
This represents an integer percentage of the volume, ranging from 0
to 100%.
HEADPHONE_VOLUME
integer, default unset
This represents an integer percentage of the headphone volume,
ranging from 0 to 100%.
PCM_VOLUME
integer, default unset
This represents an integer percentage of the PCM volume, ranging
from 0 to 100%.
CD_VOLUME
integer, default unset
This represents an integer percentage of the CD input volume,
ranging from 0 to 100%.
FRONT_VOLUME
integer, default unset
This represents an integer percentage of the front speaker volume,
ranging from 0 to 100%.
FRONT_VOLUME
integer, default unset
This represents an integer percentage of the front speaker volume,
ranging from 0 to 100%.
MIC_VOLUME
integer, default unset
This represents an integer percentage of the microphone input
volume, ranging from 0 to 100%.

LTS.CONF-XORGPARAMETERS

These parameters affect how Xorg behaves.
USE_XFS
boolean, default False
Instructs the thin client to look at the XFS_SERVER option, and use
XFS for serving fonts.
XFS_SERVER
IP address, default unset
If you are using an X Font Server to serve fonts, then you can use
this entry to specify the IP address of the host that is acting as
the font server. If this is not specified, it will use the default
server, which is specified with the SERVER entry described above.
CONFIGURE_X
If you want to be able to configure the individual settings of the
X configuration file, without having the X automatically configure
the graphics card for you, you must enable this option. By default
this option is turned off. To turn it on do:
CONFIGURE_X = True
. You don't need this option just for keyboard and mouse settings.
It corresponds to the graphic card and monitor options only.
X_CONF
string, default unset
If you want to create your own complete X.org config file, you can
do so and place it in the /opt/ltsp/<arch>/etc/X11 directory. Then,
whatever you decide to call it needs to be entered as a value for
this configuration variable. For example: X_CONF =
/etc/X11/my-custom-xorg.conf Note that for the thin client, you
reference it from /etc/X11.
X_RAMPERC
default '100', Percentage of RAM for X server
Some programs allocate a large amount of ram in the X.org server
running on your thin client. Programs like Firefox and Evince can
use up so much ram, that they eventually exhaust all your physical
ram, and NBD swap, causing your thin client to crash. If you find
your clients being booted back to a login prompt, or freezing up
when viewing certain PDF's or web pages, this may be the problem.
The X_RAMPERC variable stands for X RAM PERCent, and is a number
between 0 and 100 that specifies how much of the free space on your
thin client X.org is allowed to consume. You'll generally want to
set it at something lower than 100 percent, if you're having
problems. Experimentation has shown a value between 80 and 90 will
usually keep the terminal alive. What will then happen is the
program consuming the memory will die, as opposed to the thin
client itself. If you're having unexplained terminal problems,
specifying:
X_RAMPERC = 80
in your lts.conf file may improve things.
X_VIRTUAL
string, default unset
If you want to have a virtual screen which is larger than the
physical screen on your thin client, you would configure that by
providing a string of the form "width height" in this parameter,
similar to the xorg.conf format.
XDM_SERVER
IP address, default unset
If you're using the older startx screen script, and need to specify
a different XDMCP server, then you can specify the server here. If
this parameter is NOT specified, then it will use the SERVER
parameter described above.
XSERVER
You can use this parameter to override which X server the thin
client will run. For PCI and AGP video cards, this parameter should
not be required. The thin client should normally be able to
auto-detect the card.
If, for some reason you do need to manually set it, here are some
valid values:
ark, ati, atimisc, chips, cirrus_alpine cirrus, cirrus_laguna,
cyrix, dummy, fbdev fglrx, glint, i128, i740, i810, imstt, mga,
neomagic, newport, nsc, nv, r128, radeon, rendition, riva128, s3,
s3virge, savage, siliconmotion, sis, sisusb, tdfx, tga, trident,
tseng, v4l, vesa, vga, via, vmware, voodoo
X_MOUSE_DEVICE
string, default unset
This is the device node that the mouse is connected to. If it is a
serial mouse, this would be a serial port, such as /dev/ttyS0 or
/dev/ttyS1. This is not needed for PS/2 or USB mice, as they are
auto-detected.
X_MOUSE_PROTOCOL
Should be auto-detected. However, valid entries include:
sunkbd, lkkbd, vsxxxaa, spaceorb, spaceball, magellan, warrior,
stinger, mousesystems, sunmouse, microsoft, mshack, mouseman,
intellimouse, mmwheel, iforce, h3600ts, stowawaykbd, ps2serkbd,
twiddler, twiddlerjoy
X_MOUSE_EMULATE3BTN
boolean, default unset
Normally unset, may need to be set to Y for certain 2 button mice.
X_NUMLOCK
boolean, default False
If this variable is set to True, then the numlock key will be
defaulted to on when the terminal boots. Note that the numlockx
command must be installed in the chroot for this to work.
X_COLOR_DEPTH
Integer: 2, 4, 8, 16, 24, 32 default 24
This is the number of bits to use for the colour depth. Possible
values are 8, 16, 24 and 32. 8 bits will give 256 colours, 16 will
give 65536 colours, 24 will give 16 million colours and 32 bits
will give 4.2 billion colours! Not all X servers support all of
these values. The default value for this is 24.
X_HORZSYNC
min-max values
This sets the X.org HorizSync configuration parameter. This should
be auto-detected for your monitor, however, if you want to force a
lower resolution, use this parameter to do so.
X_VERTREFRESH
min-max values
This sets the X.org VertRefresh configuration parameter. This
should be auto-detected for your monitor. If you need to force a
lower resolution, use this parameter to do so.
X_VIDEO_RAM
string, default unset
This sets the X.org VideoRam configuration parameter. The setting
is in kilobytes. This should be auto-detected for your monitor. If
you need to force a different video ram setting, use this parameter
to do so.
X_OPTION_01...X_OPTION_12
A valid Device option
This allows you to specify Option settings in the xorg.conf file,
to add options to the video driver. A common use for this will be
to test turning off acceleration in your driver, if you're having
trouble. An example usage would be:
X_OPTION_01 = "\"NoAccel\"" X_OPTION_02 = "\"AnotherOption\" \"True\""
You probably won't need these except in special circumstances.
X_MONITOR_OPTION_01...X_MONITOR_OPTION_10
string, default unset
A valid Monitor option, that would normally be used in an xorg.conf
file.
X_MODE_0, X_MODE_1, and X_MODE_2
string, default unset
These set the X.org ModeLine configuration. For example, if your
thin client comes up in a higher resolution than what you want,
say, 1280x1024, specifying:
X_MODE_0 = 1024x768
should get your desired resolution on startup.
For drivers that support XRANDR, the XRANDR_MODE_* variabled are
preferred. See the XRANDR section.
X_BLANKING
A positive integer
When set, X_BLANKING will cause DPMS standby to activate after the
number of seconds provided. If the monitor does not support DPMS,
then the blanking screensaver will activate. If X_BLANKING is set
to 0, the monitor will remain on indefinitely. NOTE: This does not
apply to the xdmcp or startx screen script. Also, server-side
Xclients such as power managers and screensavers may override this
setting.

LTS.CONFOPTIONS-SCREENSCRIPTS

SCREEN_01...SCREEN_12
string, default ldm
Up to 12 screen scripts can be specified for a thin client. This
will give you up to 12 sessions on the thin client, each accessible
by pressing the Ctrl-Alt-F1 through Ctrl-Alt-F12 keys.
Currently, possible values include: rdesktop, xdmcp, shell, ldm,
startx (depreciated), and telnet
Look in the $CHROOT/usr/share/ltsp/screen.d directory for more
scripts, or write your own, and put them there.
TELNET_HOST
IP address, default unset
If the thin client is setup to have a character based interface,
then the value of this parameter will be used as the host to telnet
into. If this value is NOT set, then it will use the value of
SERVER above.

LTS.CONFOPTIONS-LDMOPTIONS

LDM_AUTOLOGIN
boolean, default False
This option allows the thin client to login automatically without
the need for a username and password. To set it set
LDM_AUTOLOGIN = True
for the corresponding thin client. This will attempt to log in the
thin client with username = hostname and password = hostname. You
can also set a user and password with LDM_USERNAME and LDM_PASSWORD
variables.
LDM_DEBUG
boolean, default unset
Turns on ldm debugging on the thin client. Log is written to
/var/log/ldm.log on the thin client itself.
LDM_DIRECTX
boolean, default False
This is arguably the most important LDM option, as it allows you to
turn off the encrypted X tunnel via SSH, and instead run a less
secure, but much faster unencrypted tunnel. Users who have slower
thin clients will want to set this to True. It is set to True by
default in Fedora.
LDM_GUESTLOGIN
boolean, default False
This option places a GUEST LOGIN button underneath the entry field
for username and password. To set it set
LDM_GUESTLOGIN = True
for the corresponding thin client. You can also set a user and
password with
LDM_USERNAME = John
and
LDM_PASSWORD = secret
, although not setting these will default to the hostname of the
thin client.
LDM_ALLOW_USER
string
This option allows you to give access to certain thin clients based
on the username set in /etc/passwd. For example, thin client A
should only be used by Jane, Bob, and Fred, while thin client B is
to be used by Harry only. By adding these options to the
corresponding mac addresses you allow or deny access to the thin
clients in question. Example:
[thin:client:A:mac:address]
LDM_ALLOW_USER = Jane,Bob,Fred
[thin:client:B:mac:adddress]
LDM_ALLOW_USER = Harry
LDM_LOGIN_TIMEOUT
integer
This lets LDM automatically login after the set amount of time in
seconds. If you specify this option, then do not specify
LDM_AUTOLOGIN. Use it in this format:
[thin:client:mac:address]
LDM_LOGIN_TIMEOUT = 25
LDM_USERNAME
string, default unset
This is the username that LDM will use for autologin.
LDM_PASSWORD
string, default unset
This is the password that LDM will use for autologin.
LDM_SYSLOG
boolean, default False
Normally, LDM logs to a simple file on the thin client, namely
/var/log/ldm.log. This has the advantage of being fast, but the
disadvantage of being hard to read for the administrator in the
event of a problem, as the administrator must either spawn a shell
screen session, or enable root login in tty1. By setting this
option to "True", you can log up to the server ifyou'veenabledyourserver'ssyslogforremotelogging.LDM_LANGUAGE
string, default unset
This allows the system administrator to override the default locale
settings on the server by setting the environment variables LANG,
LANGUAGE and LC_ALL at login.
Use the LANG variable to set the default locale for LDM's user
interface.
LDM_SSHOPTIONS
string
Allows you to specify custom options to the ssh sessions started
between LDM and the server.
NETWORK_COMPRESSION
boolean, default False
Enables compression of the SSH traffic over the network. Note that
while this will reduce your network traffic, it will increase your
cpu load.
SSH_OVERRIDE_PORT
integer, default unset
If you run your ssh server different from the defult, you may set
the port the thin client will use with this parameter.
SSH_FOLLOW_SYMLINKS
boolean, default True
Causes sshfs mounted filesystems for local applications to follow
symlinks. Should not need to be modified under normal
circumstances.
LDM_SESSION
string, default unset
Used to chose the default session on the server.
LDM_XSESSION
string, default Xsession
Allows you to specify custom script on the server for LDM to run,
rather than the server's standard script for starting an X session
(usually Xsession).

LOCALAPPLICATIONS

LOCAL_APPS
boolean, default True
Enables support for running local apps on the thin client.
LOCAL_APPS_MENU
boolean, default False
Enables overriding of menu items from remote (server) applications.
If this is set to True, local applications in the users menu will
be used instead of the applications on the server.
LOCAL_APPS_MENU_ITEMS
string, default unset
This item should contain a comma separated list of application
names as they appear on their .desktop files.
LOCAL_APPS_WHITELIST
string, default unset
Used to allow only specified space-separated commands to be run as
local apps, allow all is default if unset. Full-paths are required
for each command. No spaces in the names are allowed.